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Page 276 / 412 Scroll up to view Page 271 - 275
Chapter 24 VoIP Status
VMG8924-B10A and VMG8924-B30A Series User’s Guide
276
Message
Waiting
This field indicates whether or not there are any messages waiting for the SIP account.
Last Incoming
Number
This field displays the last number that called the SIP account. The field is blank if no
number has ever dialed the SIP account.
Last Outgoing
Number
This field displays the last number the SIP account called. The field is blank if the SIP
account has never dialed a number.
Call Status
Account
This column displays each SIP account in the Device.
Duration
This field displays how long the current call has lasted.
Status
This field displays the current state of the phone call.
Idle
- There are no current VoIP calls, incoming calls or outgoing calls being made.
Dial
- The callee’s phone is ringing.
Ring
- The phone is ringing for an incoming VoIP call.
Process
- There is a VoIP call in progress.
DISC
- The callee’s line is busy, the callee hung up or your phone was left off the hook.
Codec
This field displays what voice codec is being used for a current VoIP call through a phone
port.
Peer Number
This field displays the SIP number of the party that is currently engaged in a VoIP call
through a phone port.
Phone Status
Phone
This field displays the name of a phone port on the Device.
Outgoing
Number
This field displays the SIP number that you use to make calls on this phone port.
Incoming
Number
This field displays the SIP number that you use to receive calls on this phone port.
Table 131
System Monitor > VoIP Status (continued)
LABEL
DESCRIPTION
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HAPTER
25
ARP Table
25.1
Overview
Address Resolution Protocol (ARP) is a protocol for mapping an Internet Protocol address (IP
address) to a physical machine address, also known as a Media Access Control or MAC address, on
the local area network.
An IP (version 4) address is 32 bits long. In an Ethernet LAN, MAC addresses are 48 bits long. The
ARP Table maintains an association between each MAC address and its corresponding IP address.
25.1.1
How ARP Works
When an incoming packet destined for a host device on a local area network arrives at the device,
the device's ARP program looks in the ARP Table and, if it finds the address, sends it to the device.
If no entry is found for the IP address, ARP broadcasts the request to all the devices on the LAN.
The device fills in its own MAC and IP address in the sender address fields, and puts the known IP
address of the target in the target IP address field. In addition, the device puts all ones in the target
MAC field (FF.FF.FF.FF.FF.FF is the Ethernet broadcast address). The replying device (which is either
the IP address of the device being sought or the router that knows the way) replaces the broadcast
address with the target's MAC address, swaps the sender and target pairs, and unicasts the answer
directly back to the requesting machine. ARP updates the ARP Table for future reference and then
sends the packet to the MAC address that replied.
25.2
ARP Table Screen
Use the ARP table to view IP-to-MAC address mapping(s). To open this screen, click
System
Monitor
>
ARP Table
.
Figure 162
System Monitor > ARP Table
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Chapter 25 ARP Table
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The following table describes the labels in this screen.
Table 132
System Monitor > ARP Table
LABEL
DESCRIPTION
#
This is the ARP table entry number.
IPv4/IPv6
Address
This is the learned IPv4 or IPv6 IP address of a device connected to a port.
MAC Address
This is the MAC address of the device with the listed IP address.
Device
This is the type of interface used by the device. You can click on the device type to go to its
configuration screen.
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26
Routing Table
26.1
Overview
Routing is based on the destination address only and the Device takes the shortest path to forward
a packet.
26.2
The Routing Table Screen
Click
System Monitor
>
Routing Table
to open the following screen.
Figure 163
System Monitor > Routing Table
The following table describes the labels in this screen.
Table 133
System Monitor > Routing Table
LABEL
DESCRIPTION
IPv4/IPv6 Routing Table
Destination
This indicates the destination IPv4 address or IPv6 address and prefix of this route.
Gateway
This indicates the IPv4 address or IPv6 address of the gateway that helps forward this
route’s traffic.
Subnet Mask
This indicates the destination subnet mask of the IPv4 route.
Page 280 / 412
Chapter 26 Routing Table
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Flag
This indicates the route status.
U-Up:
The route is up.
!-Reject:
The route is blocked and will force a route lookup to fail.
G-Gateway:
The route uses a gateway to forward traffic.
H-Host:
The target of the route is a host.
R-Reinstate:
The route is reinstated for dynamic routing.
D-Dynamic (redirect):
The route is dynamically installed by a routing daemon or redirect.
M-Modified (redirect):
The route is modified from a routing daemon or redirect.
Metric
The metric represents the "cost of transmission". A router determines the best route for
transmission by choosing a path with the lowest "cost". The smaller the number, the lower
the "cost".
Service
This indicates the name of the service used to forward the route.
Interface
This indicates the name of the interface through which the route is forwarded.
brx
indicates a LAN interface where x can be 0~3 to represent LAN1 to LAN4 respectively.
ptm0
indicates a WAN interface using IPoE or in bridge mode.
ppp0
indicates a WAN interface using PPPoE.
Table 133
System Monitor > Routing Table (continued)
LABEL
DESCRIPTION

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